import json

from django.contrib.auth import login, authenticate, logout
from django.http import JsonResponse
from django.shortcuts import render

# Create your views here.
from django.views import View

from apps.users.models import User
from celery_tasks.email.tasks import send_email_active
from utils.views import LoginRequiredJSONMixin
from apps.users.utils import generagt_verify_email_url, check_verify_email_token


class UsernameCountView(View):

    def get(self, request, username):
        # - 1 接收 用户名
        print(username)
        #   - 2 根据用户名查询数据库，查询数量有几个
        try:
            count = User.objects.filter(username=username).count()
        except Exception as e:
            print("count=",count)
            #   - 3 返回json数据
            response = JsonResponse({"count": 1, "code": "1", "errmsg": "OK"})
        return JsonResponse({"count": count, "code": "1", "errmsg": "324234"})

class MobileCountView(View):
    def get(self, request, mobile):
        count = User.objects.filter(mobile=mobile).count()

        print('count=', count)
        return JsonResponse({"count": count, "code": "1", "errmsg": "OK"})

class RegisterView(View):
    def post(self,request):
        body_byte = request.body
        data_dict = json.loads(body_byte)
        username = data_dict.get('username')
        password = data_dict.get('password')
        password2 = data_dict.get('password2')
        mobile = data_dict.get('mobile')
        sms_code = data_dict.get('sms_code')
        allow = data_dict.get('allow')

        if not all([username,password,password2,mobile,sms_code,allow]):
            return JsonResponse({'code':400,'errmsg':'数据上传错误'})
        try:
          user_s =User.objects.create_user(username=username,password=password,mobile=mobile)
        except Exception as e:

            print(e)
            return JsonResponse({'code':400,'errmsg':'注册失败'})
        login(request,user_s)
        response = JsonResponse({'code': 0, 'errmsg': 'ok'})
        response.set_cookie('username', user_s.username, max_age=3600 * 24 * 15)
        return response


class LoginView(View):
    def post(self, request):
        # 1 接收json数据
        body = request.body
        data_dict = json.loads(body)
        username = data_dict.get('username')
        password = data_dict.get('password')
        remembered = data_dict.get('remembered')

        # 2 验证数据是否为空  正则
        if not all([username, password, remembered]):
            return JsonResponse({'code': 400, 'errmsg': '写错了'})
        import re
        if re.match('^1[3-9]\d{9}$', username):
            # 手机号
            User.USERNAME_FIELD = 'mobile'
        else:
            # account 是用户名
            # 根据用户名从数据库获取 user 对象返回.
            User.USERNAME_FIELD = 'username'
        # 3 验证码用户名和密码是否正确
        user = authenticate(username=username, password=password)
        if not user:
            return JsonResponse({'code': 400, 'errmsg': '用户名密码错误'})

        # 4 状态保持
        login(request, user)

        # 5 判断是否记住登录
        if remembered:
            # 如果记住:  设置为两周有效
            request.session.set_expiry(None)
        else:
            # 如果没有记住: 关闭立刻失效
            request.session.set_expiry(0)
        # 6 返回响应
        response = JsonResponse({'code': 0, 'errmsg': 'ok'})
        response.set_cookie('username',user.username,max_age=3600*24*15)
        return response


class LogoutView(View):

    def delete(self, request):
        """实现退出登录逻辑"""
        # 清理session
        logout(request)
        # 退出登录，重定向到登录页
        response = JsonResponse({'code': 0,
                                 'errmsg': 'ok'})
        # 退出登录时清除cookie中的username
        response.delete_cookie('username')

        return response

class UserInfoView(LoginRequiredJSONMixin,View):
    def get(self,request):
        print(request.user.username)
        print(request.user.mobile)

        return JsonResponse({'code':0,'errmsg':'ok','info_data':{'username':request.user.username,
                                                                 'moblie':request.user.mobile,
                                                                 'email': request.user.email,
                                                                 'email_active': request.user.email_active
                                                                 }})
class SaveEmailView(LoginRequiredJSONMixin, View):
    def put(self, request):
        #  1 获取json数据 转为字典
        body = request.body
        data_dict = json.loads(body)

        #  2 从字典里拿到邮箱地址
        email = data_dict.get('email')
        #  3 校验
        if not email:
            return JsonResponse({'code': 300, 'errmsg': '邮箱不存在'})
        #  4 保存到数据库
        try:
            request.user.email = email
            request.user.save()
        except Exception as e:
            print(e)
            return JsonResponse({'code': 400, 'errmsg': '邮箱保存失败'})


        verify_url = generagt_verify_email_url(request.user)
        message ='<p>尊敬的用户您好！</p><p>感谢您使用美多商城。</p><p>您的邮箱为：%s 。请点击此链接激活您的邮箱：</p><p><a href="%s">%s<a></p>'%\
                 (email, verify_url, verify_url)

        #异步发送认证邮件
        send_email_active.delay(email,message)

        #  5 返回相应
        return JsonResponse({'code': 0, 'errmsg': 'ok'})
class EmailVerifyView(View):
    def put(self, request):
        # - 1 接收请求（PUT）数据
        # - 2 获取token
        token = request.GET.get('token')
        # - 3 对token解密 获取解密数据里的user_id
        user_id = check_verify_email_token(token)
        # - 5 如果获取不到  说明过期
        if not user_id:
            return JsonResponse({'code': 400, 'errmsg': '激活邮件已经过期'})
        # - 6 根据user_id去数据库查询
        try:
            user = User.objects.get(id=user_id)
        except Exception as e:
            print(e)
            return JsonResponse({'code': 405, 'errmsg': '当前用户不存在'})

        # - 7 把查到user对象的 email_active字段 改为true  不要忘记save
        user.email_active = True
        user.save()
        return JsonResponse({'code': 0, 'errmsg': '激活成功'})
